LOW BEAM OPTICAL MODULE, LOW BEAM ILLUMINATION MODULE, VEHICLE LAMP AND VEHICLE

A low beam optical module includes a lens, a light-shielding sheet and at least one light concentrating portion. The light-shielding sheet includes a light-shielding sheet body. An upper edge of a front end of the light-shielding sheet body comprises a low beam cutoff line structure. A front end surface and the rear end surface of the light-shielding sheet body are transparent. The light concentrating portion is connected to a rear end of the light-shielding sheet. The lens is arranged in front of the light-shielding sheet, and an outer contour surface of the at least one light concentrating portion is engaged with a lower surface of the light-shielding sheet body—the light-shielding sheet body can receive emitted light of the light concentrating portion and refract the light from the front end surface to the lens. The projected light forms a low beam region III beam shape. A low beam illumination module, a vehicle lamp and a vehicle includes the low beam optical module.